CN205417089U - Car and atmospheric pressure balanced structure thereof - Google Patents
Car and atmospheric pressure balanced structure thereof Download PDFInfo
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- CN205417089U CN205417089U CN201620245938.4U CN201620245938U CN205417089U CN 205417089 U CN205417089 U CN 205417089U CN 201620245938 U CN201620245938 U CN 201620245938U CN 205417089 U CN205417089 U CN 205417089U
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- elimination portion
- noise elimination
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Abstract
The utility model provides a car and atmospheric pressure balanced structure thereof, atmospheric pressure balanced structure include: the exhaust curtain, the exhaust curtain is including the exhaust curtain body and the door body, exhaust curtain body has the ventilation hole, men tike pivot ground is connected with the switching on the exhaust curtain body the ventilation hole, and silencing member, silencing member with exhaust curtain body fixed connection, silencing member is including standing by as an outsider to interior first noise elimination portion that distributes in proper order and second noise elimination portion, the outside of first noise elimination portion with the foreign side is upwards relative and spaced apart including the exhaust curtain body, first noise elimination portion with in the second noise elimination portion one of them is used for absorbing high frequency noise, and another is used for absorbing low frequency noise. The utility model discloses a not only can the balance car inside and outside atmospheric pressure of atmospheric pressure balanced structure can reduce the driving noise moreover.
Description
Technical field
This utility model relates to technical field of vehicle, particularly to a kind of automobile and air pressure balance structure thereof.
Background technology
Being typically provided with the aerofluxus curtain for balancing vehicle inside and outside differential pressure on the gusset of automobile, the vent on passenger's aerofluxus curtain at closing time opens wide, and car door air can be outside vent flows to car, and thus balance car external and internal pressure is poor, reduce the noise produced of closing the door.
There are the following problems for said structure: during high vehicle speeds, in car inside and outside differential pressure and traveling, Vehicular vibration can cause aerofluxus curtain periodically to be opened, cause exhaust noise, tire noise by the incoming car of vent, cause that high vehicle speeds noise is big, affect car load NVH performance.Additionally, in vehicle urgency accelerator, the capacity of exhaustor is relatively big and exhaust airstream speed is higher, and such exhaust ports can produce bigger exhaust noise, and this exhaust noise also can affect car load NVH performance in the incoming car of vent.
Utility model content
In view of this, this utility model be directed to one can not only balance car inner and outer air pressure, and the air pressure balance structure of automobile of driving noise can be reduced.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
The air pressure balance structure of a kind of automobile includes: aerofluxus curtain, and described aerofluxus curtain includes that aerofluxus curtain body and door body, described aerofluxus curtain body have air vent, and described door body is pivotably coupled on described aerofluxus curtain body with air vent described in opening and closing；And damper element, described damper element is fixing with described aerofluxus curtain body to be connected, described damper element includes the first noise elimination portion and the second noise elimination portion being sequentially distributed in oneself is the most extremely, the outside in described first noise elimination portion and described aerofluxus curtain body are relative and spaced apart in inward-outward direction, one of them in described first noise elimination portion and described second noise elimination portion is used for absorbing high frequency noise, and another is used for absorbing low frequency noise.
Further, described first noise elimination portion is used for absorbing low frequency noise, and described second noise elimination portion is used for absorbing high frequency noise.
Further, described damper element includes: box body, it is provided with median septum in described box body, the outside of septum plate and described box body limit the first chamber jointly, the inner side of septum plate and described box body limit the second chamber jointly, there is on the outside plate of described box body the first through hole, septum plate is communicated with the second through hole of described first chamber and described second chamber；And sound absorbing filler, described sound absorbing filler is filled in described first chamber, and described first chamber and described sound absorbing filler collectively form described first noise elimination portion, and described second chamber and septum plate collectively form described second noise elimination portion.
Further, the gross area of described second through hole is S, and the volume of described second chamber is V, the thickness of septum plate is L, and the mid frequency that described second noise elimination portion absorbs noise is f, and the velocity of sound that described second noise elimination portion absorbs noise is c, wherein, S/VL=(2 π f/c).
Further, the number of described first through hole is multiple, and the plurality of first through hole is multiple lines and multiple rows arrangement.
Further, the number of described second through hole is 1 and is positioned at the middle part of septum plate.
Further, the left plate of described box body is tilted to the right from the inside to the outside, and the right plate of described box body is tilted to the left from the inside to the outside.
Further, described aerofluxus curtain body has multiple inner fovea part being from up to down sequentially distributed, and the diapire of each described inner fovea part is formed with described air vent, and the upper end of described door body is pivotably coupled on the diapire of described inner fovea part.
Further, when described door body is in the closed position closing described air vent, described door body is the most outward-dipping.
Relative to prior art, the air pressure balance structure of automobile described in the utility model has the advantage that
The air pressure balance structure of the automobile according to this utility model embodiment, by arrange in the inner side of aerofluxus curtain body damper element external noise is eliminated the noise when air vent flows to inside aerofluxus curtain at extraneous gas, noise reduction, it is further advanced by the first noise elimination portion and the second noise elimination portion and absorbs high frequency noise and low frequency noise, the most successively achieving the specific aim to different frequency noise to eliminate, noise elimination noise reduction effect is more preferable.
Another object of the present utility model is to propose a kind of automobile with this air pressure balance structure, to improve the NVH performance of car load.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
A kind of automobile includes: body side wall, and described body side wall has installing hole；And described air pressure balance structure, described aerofluxus curtain and described installing hole clamping and close described installing hole.
Relative to prior art, automobile described in the utility model has the advantage that
The automobile of this utility model embodiment can not only reduce door closing force, noise is closed the door in reduction, car external and internal pressure is better balanced, and can eliminate the noise produced in driving conditions, improves the NVH performance of car load.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic front view of the air pressure balance structure of the automobile according to this utility model embodiment.
Fig. 2 is the cross-sectional schematic along Fig. 1 center line A-A.
Fig. 3 is the close-up schematic view in B region in Fig. 2.
Fig. 4 is the partial schematic sectional view of the box body of the air pressure balance structure of the automobile according to this utility model embodiment.
Fig. 5 is the elevational schematic view of the air pressure balance structure of the automobile according to this utility model embodiment.
Fig. 6 is that the right side of the air pressure balance structure of the automobile according to this utility model embodiment regards schematic diagram.
Description of reference numerals:
100-air pressure balance structure, 10-aerofluxus curtain, 11-aerofluxus curtain body, 111-inner fovea part, 11a-air vent, 12-door body, 20-damper element, 21-box body, the outside plate of 211-box body, 211a-the first through hole, the inner panel of 212-box body, the left plate of 213-box body, the right plate of 214-box body, 22-median septum, 221-the second through hole, 23-the first chamber, 24-the second chamber, 30-connects post.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment can be mutually combined.
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
The air pressure balance structure 100 of the automobile according to this utility model first aspect embodiment includes: aerofluxus curtain 10 and damper element 20.
As depicted in figs. 1 and 2, aerofluxus curtain 10 includes that aerofluxus curtain body 11 and door body 12, aerofluxus curtain body 11 have air vent 11a, and door body 12 is pivotably coupled on aerofluxus curtain body 11 with opening and closing air vent 11a.Damper element 20 is fixing with aerofluxus curtain body 11 to be connected, damper element 20 includes the first noise elimination portion and the second noise elimination portion being sequentially distributed in oneself is the most extremely, the outside in the first noise elimination portion and aerofluxus curtain body 11 are relative and spaced apart in inward-outward direction, one of them in first noise elimination portion and described second noise elimination portion is used for absorbing high frequency noise, and another is used for absorbing low frequency noise.Wherein, high frequency noise refers to that frequency is higher than the noise of 200Hz, and low frequency noise refers to that frequency is less than the noise of 200Hz.
The air pressure balance structure 100 of the automobile according to this utility model embodiment, by arrange in the inner side of aerofluxus curtain body 11 damper element 20 external noise is eliminated the noise when air vent 11a flows to inside aerofluxus curtain 10 at extraneous gas, noise reduction, it is further advanced by the first noise elimination portion and the second noise elimination portion and absorbs high frequency noise and low frequency noise, the most successively achieve the specific aim to different frequency noise to eliminate, noise elimination noise reduction effect is more preferable, improves the NVH performance of automobile.
It is appreciated that, in vehicle traveling process, noise, tire and the noise of ground friction generation that when vehicle body and the noise of air contact generation, automobile emergency accelerate when the noise of the vent flowing through aerofluxus curtain 10 specifically includes that galloping, the exhaust noise of air vent, tyre rotation produce.Wherein, when noise during galloping and automobile emergency accelerate, the exhaust noise of air vent mostly is high frequency noise, and the noise that tyre rotation produces mostly is low frequency noise.
Alternatively, the first noise elimination portion is used for absorbing low frequency noise, and the second noise elimination portion is used for absorbing high frequency noise.Thus, first with first noise elimination portion absorb high frequency noise, after utilize second noise elimination portion absorb low frequency noise, noise reduction is more preferable.
Further, damper element 20 includes box body 21 and sound absorbing filler (not shown).Median septum 22 it is provided with in box body 21, the outside of median septum 22 and box body 21 limit the first chamber 23 jointly, the inner side of median septum 22 and box body 21 limit the second chamber 24 jointly, there is on the outside plate 211 of box body 21 first through hole 211a, median septum 22 is communicated with the first chamber 23 and the second through hole 221 of the second chamber 24.Sound absorbing filler is filled in the first chamber 23, and the first chamber 23 and sound absorbing filler collectively form the first noise elimination portion, and the second chamber 24 collectively forms the second noise elimination portion with median septum 22.Wherein, the second noise elimination portion forms Helmholtz acoustic filter.
Specifically, as shown in Figure 2, the cuboid that box body 21 is generally hollow, in median septum 22 is arranged on box body 21 and box body 21 is separated into the first chamber 23 and the second chamber 24, the outside of median septum 22 and the outside plate 211 of box body 21, part side plate limit the first chamber 23 jointly, and the inner side of median septum 22 and the inner panel 212 of box body 21, part side plate limit the second chamber 24 jointly.Sound absorbing filler is that sound-absorbing sponge, sound-absorbing such as are weaved cotton cloth at the sound-absorbing material.Sound absorbing filler utilizes viscosity and the intrinsic friction of sound-absorbing material, makes high pitch noise be detained in sound absorbing filler and rub back and forth, thus absorbs high frequency noise.
Thus, in vehicle traveling process, after door body 12 on aerofluxus curtain 10 is opened, extraneous air through vent enter, with after enter the first chamber 23 to be absorbed high frequency noise by sound absorbing filler through the first through hole 211a, can not be absorbed by sound absorbing filler owing to the sound wave of low frequency noise is longer, the low frequency noise not being eliminated is in the second through hole 221 enters the second chamber 24, and the sound wave entering the second chamber 24 couples to realize the elimination to low frequency noise with the sound wave through the second chamber 24 reflection.Additionally, above-mentioned damper element 20 not only soundproof effect is good, and simple and compact for structure, low cost, it is simple to batch production.
Being appreciated that box body 21 can connect by being connected post 30 with aerofluxus curtain body 11, box body 21, aerofluxus curtain body 11, connection post 30 collectively constitute an integral part of working of plastics, and the door body 12 of aerofluxus curtain 10 can be rubber parts.
According to embodiments more of the present utility model, the gross area of the second through hole 221 is S (square metre), the volume of the second chamber 24 is V (cubic meter), the thickness of median septum 22 is L (rice), the mid frequency that described second noise elimination portion absorbs noise is f (Hz), the velocity of sound that described second noise elimination portion absorbs noise is c (metre per second (m/s)), wherein, and S/VL=(2 π f/c).
Thus, to second through hole the 221, second chamber 24 of box body 21, median septum 22 carries out respective design just can make the second noise elimination portion absorbent core frequency (troublesome frequencies) and noise of neighbouring frequency thereof.
The number being appreciated that the second through hole 221 can be one or more.When the number of the second through hole 221 is 1, the gross area S of the second through hole 221 is the cross-sectional area of this second through hole 221；When the number of the second through hole 221 is multiple, the gross area S of the second through hole 221 is the summation of the cross-sectional area of multiple second through hole 221.
Alternatively, the second noise elimination portion absorbs the target frequency of noise is 40-100Hz.Being appreciated that this utility model is not limited to this, those skilled in the art can design the scope of the noise of the first noise elimination portion and the elimination of the second noise elimination portion according to the characteristic distributions of vehicle traveling process medium-high frequency noise and low frequency noise.
As shown in Figures 2 and 3, the number of the second through hole 221 is 1 and is positioned at the middle part of median septum 22.Thus, the noise in the first chamber 23 is enable to enter in the second chamber 24 regularly, it is to avoid in the second chamber 24, turbulent flow to occur, improve the noise reduction in the second noise elimination portion.
As shown in Figure 4, further, the left plate 213 of box body 21 is tilted to the right from the inside to the outside, and the right plate 214 of box body 21 is tilted to the left from the inside to the outside.So, passenger at closing time, by air outwardly in car under the guide functions of left plate 213 and right plate 214, gap (gap between the i.e. second noise elimination portion and aerofluxus curtain body 11) between damper element 20 and aerofluxus curtain 10 flows to vent, not only reduce flow resistance, accelerate flowing velocity, and avoid air-flow and directly impact aerofluxus curtain 10, thus, make air rapidly flow toward car is outer, reduce car in close the door constriction, reduce door closing force and noise of closing the door, optimize the driving experience of passenger.
In the specific embodiment shown in Fig. 4, left plate 213 and right plate 214 are arc surfaced, and the flowing thus making air-flow is more smooth.Being appreciated that this utility model is not limited to this, such as, left plate, right plate can also is that planar shaped.
In certain embodiments, with reference to shown in Fig. 2 and Fig. 5, aerofluxus curtain body 11 has multiple inner fovea part 111 being from up to down sequentially distributed, and the diapire of each inner fovea part 111 is formed with air vent 11a, and the upper end of door body 12 is pivotably coupled on the diapire of inner fovea part 111.Thus, aerofluxus curtain body 11 has more preferable shunting action, and door body 12 is opened rear air-flow and discharged through corresponding inner fovea part 111, decreases the air-flow discharged through each air vent 11a and impacts mutually produced noise.
Further, when door body 12 is in the closed position closing air vent 11a, door body 12 is the most outward-dipping.So, door body 12 is pressed on the diapire of lower concave part under gravity, and air vent 11a is played better seal effect, is prevented effectively from external dust through vent into the car.
In certain embodiments, as shown in Figure 6, the number of the first through hole 211a is multiple, and multiple first through hole 211a are multiple lines and multiple rows arrangement.Thus, multiple first through hole 211a carry out reasonable diffluence to air-flow into the car, so that air-flow is even into the first chamber 23, make sound absorbing filler more abundant to the elimination of noise.
Automobile according to this utility model second aspect embodiment includes the air pressure balance structure 100 of body side wall and above-described embodiment, and body side wall has installing hole, aerofluxus curtain 10 and installing hole clamping and closing installing hole.Thus, the automobile of this utility model embodiment can not only reduce door closing force, noise is closed the door in reduction, car external and internal pressure is better balanced, and can eliminate the noise produced in driving conditions, improves the NVH performance of car load.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (10)
1. the air pressure balance structure (100) of an automobile, it is characterised in that including:
Aerofluxus curtain (10), described aerofluxus curtain (10) includes aerofluxus curtain body (11) and door body (12), described aerofluxus curtain body (11) has air vent (11a), and described door body (12) is pivotably coupled on described aerofluxus curtain body (11) with air vent described in opening and closing (11a)；With
Damper element (20), described damper element (20) is fixing with described aerofluxus curtain body (11) to be connected, described damper element (20) includes the first noise elimination portion and the second noise elimination portion being sequentially distributed in oneself is the most extremely, the outside in described first noise elimination portion and described aerofluxus curtain body (11) are relative and spaced apart in inward-outward direction, one of them in described first noise elimination portion and described second noise elimination portion is used for absorbing high frequency noise, and another is used for absorbing low frequency noise.
The air pressure balance structure (100) of automobile the most according to claim 1, it is characterised in that described first noise elimination portion is used for absorbing low frequency noise, described second noise elimination portion is used for absorbing high frequency noise.
The air pressure balance structure (100) of automobile the most according to claim 2, it is characterised in that described damper element (20) including:
Box body (21), median septum (22) it is provided with in described box body (21), the outside of septum plate (22) and described box body (21) limit the first chamber (23) jointly, the inner side of septum plate (22) and described box body (21) limit the second chamber (24) jointly, there is on the outside plate (211) of described box body (21) the first through hole (211a), septum plate (22) is communicated with second through hole (221) of described first chamber (23) and described second chamber (24)；And
Sound absorbing filler, described sound absorbing filler is filled in described first chamber (23), described first chamber (23) and described sound absorbing filler collectively form described first noise elimination portion, and described second chamber (24) and septum plate (22) collectively form described second noise elimination portion.
The air pressure balance structure (100) of automobile the most according to claim 3, it is characterized in that, the gross area of described second through hole (221) is S, the volume of described second chamber (24) is V, the thickness of septum plate (22) is L, and the mid frequency that described second noise elimination portion absorbs noise is f, and the velocity of sound that described second noise elimination portion absorbs noise is c, wherein, S/VL=(2 π f/c).
The air pressure balance structure (100) of automobile the most according to claim 3, it is characterised in that the number of described first through hole (211a) is multiple, the plurality of first through hole (211a) is arranged in multiple lines and multiple rows.
The air pressure balance structure (100) of automobile the most according to claim 3, it is characterised in that the number of described second through hole (221) is 1 and is positioned at the middle part of septum plate (22).
The air pressure balance structure (100) of automobile the most according to claim 3, it is characterized in that, the left plate (213) of described box body (21) is tilted to the right from the inside to the outside, and the right plate (214) of described box body (21) is tilted to the left from the inside to the outside.
8. according to the air pressure balance structure (100) of the automobile according to any one of claim 1-7, it is characterized in that, described aerofluxus curtain body (11) has multiple inner fovea part (111) being from up to down sequentially distributed, the diapire of each described inner fovea part (111) is formed with described air vent (11a), and the upper end of described door body (12) is pivotably coupled on the diapire of described inner fovea part (111).
The air pressure balance structure (100) of automobile the most according to claim 8, it is characterized in that, when described door body (12) is in the closed position closing described air vent (11a), described door body (12) is the most outward-dipping.
10. an automobile, it is characterised in that including:
Body side wall, described body side wall has installing hole；And
As claimed in any one of claims 1-9 wherein air pressure balance structure (100), described aerofluxus curtain (10) and described installing hole clamping and close described installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245938.4U CN205417089U (en) | 2016-03-28 | 2016-03-28 | Car and atmospheric pressure balanced structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245938.4U CN205417089U (en) | 2016-03-28 | 2016-03-28 | Car and atmospheric pressure balanced structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205417089U true CN205417089U (en) | 2016-08-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620245938.4U Active CN205417089U (en) | 2016-03-28 | 2016-03-28 | Car and atmospheric pressure balanced structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205417089U (en) |
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2016
- 2016-03-28 CN CN201620245938.4U patent/CN205417089U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |